Inter-locking construction block



FIG. 1 is a top perspective view of an inter-locking construction block;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view of thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a right end view thereof; and,

FIG. 7 is another end view thereof. 

CLAIM The ornamental design for an inter-locking construction block, as shown and described. 